1These are the words of the covenant which Yahweh commanded Moses to make with the children of Israel in the land of Moab, in addition to the covenant which he made with them in Horeb. 2Moses called to all Israel, and said to them:
Your eyes have seen all that Yahweh did in the land of Egypt to Pharaoh, and to all his servants, and to all his land; 3the great trials which your eyes saw, the signs, and those great wonders. 4But Yahweh has not given you a heart to know, eyes to see, and ears to hear, to this day. 5I have led you forty years in the wilderness. Your clothes have not grown old on you, and your sandals have not grown old on your feet. 6You have not eaten bread, neither have you drunk wine or strong drink, that you may know that I am Yahweh your God. 7When you came to this place, Sihon the king of Heshbon and Og the king of Bashan came out against us to battle, and we struck them. 8We took their land, and gave it for an inheritance to the Reubenites, and to the Gadites, and to the half-tribe of the Manassites. 9Therefore keep the words of this covenant and do them, that you may prosper in all that you do. 10All of you stand today in the presence of Yahweh your God: your heads, your tribes, your elders, and your officers, even all the men of Israel, 11your little ones, your wives, and the foreigners who are in the middle of your camps, from the one who cuts your wood to the one who draws your water, 12that you may enter into the covenant of Yahweh your God, and into his oath, which Yahweh your God makes with you today, 13that he may establish you today as his people, and that he may be your God, as he spoke to you and as he swore to your fathers, to Abraham, to Isaac, and to Jacob. 14Neither do I make this covenant and this oath with you only, 15but with those who stand here with us today before Yahweh our God, and also with those who are not here with us today 16(for you know how we lived in the land of Egypt, and how we came through the middle of the nations through which you passed; 17and you have seen their abominations and their idols of wood, stone, silver, and gold, which were among them); 18lest there should be among you man, woman, family, or tribe whose heart turns away today from Yahweh our God, to go to serve the gods of those nations; lest there should be among you a root that produces bitter poison; 19and it happen, when he hears the words of this curse, that he bless himself in his heart, saying, “I shall have peace, though I walk in the stubbornness of my heart,” to destroy the moist with the dry. 20Yahweh will not pardon him, but then Yahweh’s anger and his jealousy will smoke against that man, and all the curse that is written in this book will fall on him, and Yahweh will blot out his name from under the sky. 21Yahweh will set him apart for evil out of all the tribes of Israel, according to all the curses of the covenant written in this book of the law.
22The generation to come—your children who will rise up after you, and the foreigner who will come from a far land—will say, when they see the plagues of that land, and the sicknesses with which Yahweh has made it sick, 23that all of its land is sulfur, salt, and burning, that it is not sown, doesn’t produce, nor does any grass grow in it, like the overthrow of Sodom, Gomorrah, Admah, and Zeboiim, which Yahweh overthrew in his anger, and in his wrath. 24Even all the nations will say, “Why has Yahweh done this to this land? What does the heat of this great anger mean?”
25Then men will say, “Because they abandoned the covenant of Yahweh, the God of their fathers, which he made with them when he brought them out of the land of Egypt, 26and went and served other gods and worshiped them, gods that they didn’t know and that he had not given to them. 27Therefore Yahweh’s anger burned against this land, to bring on it all the curses that are written in this book. 28Yahweh rooted them out of their land in anger, in wrath, and in great indignation, and thrust them into another land, as it is today.”
29The secret things belong to Yahweh our God; but the things that are revealed belong to us and to our children forever, that we may do all the words of this law.
Jacob was the son of Isaac and Rebekah, born immediately after Esau, and Abraham was his grandfather. He achieved the right of the firstborn by trickery, in offering his older brother, Esau, food in exchange for the birthright, who cared little for this position. He also received the blessing of firstborn from his father Jacob before his death by cunning, and with the assistance of his mother Rebekah.
After his deception of Esau, receiving the blessing from his father, Jacob escaped to his uncle Laban, who in turn deceived Jacob into working for fourteen years for the marriage of Jacob to Leah, and then his beloved Rachel. Laban also sought to deceive Jacob of wages, but God intervened to ensure he would prosper. In a time of trial, when he feared the wrath of Esau, upon returning to the land of Canaan, Jacob had an encounter with God, and his name was changed to Israel, the one who wrestles with God. Even though his early life was characterized by deception, God worked through the situation to ensure that Jacob would be the one in the line of the patriarchs, to create a great nation and ultimately fulfill His purposes in the earth, especially through the future Messiah. The Messiah would guarantee the promise of the land to Abram and a person who would rule over Abraham's descendants, but also He would bring blessings to all the people of the earth (Gen 12:1-3).
In spite of Jacob's early failure by deception, God worked through him, and finally, Jacob became a different type of man after his struggle with God. As one has said,
"Despite Jacob’s faults, God chose him to be the leader of a great nation that still bears his name today. But for this, it is unlikely that we would know much about Jacob, who appears to be in the middle of events while the key players are those around him. There is no great wisdom or bravery in Jacob to speak of, and we are tempted to see him as little more than God’s passive instrument. If we are tempted to think that, because we aren’t in the spotlight performing great acts for God, we are unimportant to Him, then we should consider the life of Jacob and know that, in spite of our failings, God can and will still use us in His plan."
For more on Jacob, see "Who was Jacob in the Bible?", https://www.gotquestions.org/life-Jacob.html